Lake Huron, mean level, July, 1860-1986
#Mean July average water surface elevation, in feet, IGLD (1955) 
#for Harbor Beach, Michigan, on Lake Huron, Station 5014.  1860--1986.
#Source: Great Lakes Water Levels, 1860-1986. U.S. Dept. of Commerce, 
#National Oceanic and Atmospheric Administration, National Ocean Survey.
581.56
581.55
581.34
580.84
580.33
580.35
579.87
580.49
579.91
580.07
580.91
581.10
579.72
580.32
580.48
580.38
581.86
580.97
580.80
579.79
580.39
580.42
580.82
581.40
581.32
581.44
581.68
581.17
580.53
580.01
579.91
579.14
579.16
579.55
579.67
578.44
578.24
579.10
579.09
579.35
578.82
579.32
579.01
579.00
579.80
579.83
579.72
579.89
580.01
579.37
578.69
578.19
578.67
579.55
578.92
578.09
579.37
580.13
580.14
579.51
579.24
578.66
578.86
578.05
577.79
576.75
576.75
577.82
578.64
580.58
579.48
577.38
576.90
576.94
576.24
576.84
576.85
576.90
577.79
578.18
577.51
577.23
578.42
579.61
579.05
579.26
579.22
579.38
579.10
577.95
578.12
579.75
580.85
580.41
579.96
579.61
578.76
578.18
577.21
577.13
579.10
578.25
577.91
576.89
575.96
576.80
577.68
578.38
578.52
579.74
579.31
579.89
579.96
580.98
581.04
580.49
580.52
578.57 
578.96
579.94
579.77
579.44
578.97
580.08
580.23
580.75
581.27


